Self-shaping incandescent mantle for upright gas burners



Feb. 24. 1925. 1,527,680

, A. GUMPERZ SELF SHAPING INCANDESCENT MANTLE FOR UPRIGHT GAS BURNERS Filed F85. 4, 1924 Patented Feb. 24, 1925.

UNITED ALFRED GUMPERZ, 0F BERLIN-SCHONEBERG, GERMANY.

SELF SHAPING INCANDESCENT MANTLE FOR UPRIGHT GAS BURNERS.

Application filed February 4, 1924.

To all whom it may concern.

Be it known that I, ALFRED GUMPERZ, citizen of the German Empire, residing at Berlin-Schoneberg, Badenschestrasse 10, Germany, have invented certain new and useful Improvements in Self-Shaping lncandescent Mantlcs for Upright Gas Burners, of which the following is a specification.

This invention relates to self shaping incandescent mantles for upright gas-burners.

Self forming incandescent mantles for inverted gas-burners are known, which are packed and shipped in a flat folded form not yet incinerated the incineration of which is effected after attaching said mantles to the carrying ring or the burner nozzle proper, and which mantles will automatically shape and harden while being incinerated. Vith up-right gas-burners in which the gas flows out in an upward direction, it was not possible to make self shaping incandescent mantles of any suitable form, such as would be burnt off the cellulose skeleton by the user himself and which mantles could be packed, folded or flattened for transport in an incinerated state. If the user endeavors to burn the soft incandescent mantles on a common burner it will happen that already during ignition of the fabric, the mantle will stick to the edge of the burner-head, and that at the same moment in which the cellulose is burnt ofl and the shrinking of the mantle commences, the latter will become torn during shrinkage in consequence of the tension to which said incandescent mantle sticking to the head of the burner'a-nd fixed with its upper end by an asbestos thread or crook-shaped wire to the point of elevation of the carrying device is subjected.

It was observed that if due provision is made for shrinkage of the web in adjusting the length of the tin-incinerated mantle, and such mantle is provided at its lower edge with a metal ring of thin sheet metal, which ring is of such shape that it will loosely and without friction engage the head of the burner by means of a flanged edge or teeth or the like, in such a manner that the lower edge of the mantle engaged thereby will not extend beyond the head of the burner, the said mantle may be incinerated without any danger of being torn on any customary burner for gaseous or liquid fuel and could be given the proper shape by means of the out-flowing gases. If now the gas cock is opened, the gas al- Serial No. 690,640.

lowed to flow out and then ignited, the tis sue will burn uniformly and commence to shrink. Then the gas cock is shut and the carbonized fabric allowed to remain for some time, until the black particles of carbon attain a white colour. Thereupon the chimney is put on the burner, the gas cook opened again and the gas lit, and the mantle is allowed to shape itself under the action of the gases flowing out.

The subject matter of the invention is shown in the accompanying drawing, in which Figure 1 illustrates a burner provided with a non-incinerated incandescent mantle.

Figure 2 shows the mantle duly burnt but not shaped as yet, while Figure 3 is a view of the mantle ready shaped.

Figure 4 shows amantle (a) with metal ring, ready for transport, and Fig. 5 shows a suitable form of the ring (6) in crosssection.

The metal ring may be substituted of course by a ring consisting of a lightceramic or other suitable mass, or by a wire. Finally the mantle can be attached with its lower edge directly to the burner head by means of a wire, ribbon or an asbestos thread. In that instance, however, where the connection between the burner-head and the edge of the mantle is a rigid one, especially if the latter is somewhat short and thus will shrink to a larger extent, than that corresponding to the distance between the elevation point and the edge of the burnerhead, the mantle will get a pointed shape or even tear. This inconvenience will be dispensed with by using a ring fitting loosely on the burner-head and carried by a flange, since such ring, provided it is not too heavy, will be carried by the mantle without tearing the latter.

Now one is free to pack the soft, non-incinerated and flatly folded-up incandescent bodies together with the ring, wire or asbestos thread provided thereon, singly or in numbers for sale and the burning of the incandescent mantle may be left without hesitation to the user. Damage such as will occur in transporting the burnt incandescent bodies afterwards treated with c0llodion, will no longer take place. Thus trans-- porting them is much simplified. The whole work caused by burning and applying collodion to the mantles during the process of manufacture is dispensed with and the price of the incandescent body is extraordinarily reduced. Moreover, no waste will occur during manufacture in the shape of too narrow or too wide mantles which will both fit badly on the burner and reduce the illuminating power of the mantles.

I claim:

1. A non-incinerated upright gas mantle having suspending means at its top and a weighted. lower portion for loosely surrounding the burner head, whereby said weighted portion will be free to move vertically as the mantle shrinks when burnt ofii.

2. A non-incinerated upright gas mantle having suspending means at its top and a weighting ring about its bottom for loosely surrounding a burner head, whereby said ring will be free to move vertically as the mantle shrinks when burnt ofii.

3. \A non-incinerated upright gas mantle having suspending means at its top and a weighted metal ring on its bottom for loosely surrounding a burner head, whereby said ring will be free to move vertically as the mantle shrinks when burnt ofii.

4. A non-incinerated upright gas mantle having a suspending wire in its top and a weighted lower portion stiflening said portion and permitting ready adjustment onto the burner head, said weighted lower portion for loosely surrounding the burner head and free to move vertically under the shrinking action of the mantle when burnt off.

In testimony whereof I aifix my signature in presence of two witnesses.

DR. ALFRED GUMPERZ. Witnesses VVLAD ENDER, Enos. T. AUsPAcE. 

